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Meghna Thapar 5 years, 1 month ago
Algae contain a pigment called chlorophyll, which induces green color to the plants. Fungi do not contain chlorophyll and hence are not green in color. The word algae take its origin from the Latin word "alga," which translates into "seaweed." fungi do not contain the green pigment chlorophyll and therefore are incapable of photosynthesis. That is, they cannot generate their own food — carbohydrates — by using energy from light.
Posted by Inayat Ullah Khan 5 years, 8 months ago
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Yogita Ingle 5 years, 8 months ago
Tapetal cells are very large cells with more than one nucleus. They assist with pollen grain growth and development. Tapetal cells undergo endomitosis where the nucleus in the nuclear membrane splits, but cytokinesis does not happen. They become bi / multi nucleate because of this. Usually the cells are larger and have more than one nucleus per cell. The nuclei of tapetal cells also split as the sporogenous cells undergo mitosis. Sometimes, this mitosis is not normal due to which many cells of mature tapetum become multinucleate. It is also possible to see polyploidy and polyteny at times.
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Yogita Ingle 5 years, 8 months ago
Chanhudaro was exclusively devoted to
(i) Bead making, (ii) Shell cutting, (iii) Metal work, (iv) Seal making and (v) Weight making.
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Yogita Ingle 5 years, 8 months ago
Applications of Total Internal Reflection
- Optical Fibres:-
- They are used in telecommunication industries.
- Optical fibres work on the phenomenon of total internal reflection.
- Characteristics of Optical Fibres:-
- They are small in size and light in weight.
- They have greater information carrying capacities than metallic wires.
Posted by Tarun Ch 5 years, 8 months ago
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Pawni Chaudhary 5 years, 8 months ago
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Yogita Ingle 5 years, 8 months ago
Osmotic pressure: The external pressure that must be applied to the solution side to stop the passage of solvent into the solution through a semi- permeable membrane is known as osmotic pressure. It is denoted by π.
π = iCRT
Where,
- π is the osmotic pressure
- i is the van’t Hoff factor
- C is the molar concentration of the solute in the solution
- R is the universal gas constant
- T is the temperature
Posted by Tarun Ch 5 years, 8 months ago
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Madhu B 5 years, 8 months ago
Yogita Ingle 5 years, 8 months ago
The amount of dissolved oxygen in water decreases with rise in the water's temperature. Cold water has more dissolved oxygen per unit area than warm water. This the reason why aquatic animals are more comfortable in cold water than warm water.
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Yogita Ingle 5 years, 8 months ago
Halogens can acts as Strong oxidizing agents because of high electronegativity and high electron affinity which makes them to take electrons very much readily takes electrons from other elements and oxidise other elements.
Decreasing order of Oxidising strength among halogens is : F > Cl > Br > I
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Madhu B 5 years, 8 months ago
2Thank You